Oil or gas well



E. v.l ROWELL OIL 0R GAS WELL Filed Aug. 13, 1921 4 Sheets-Sheet 1 ct. 30, 1923 l472,555

E. v.A cRowELl.

OIL OR GAS WELL vFiled Aug. 1s, 1921 A 4 sheet-sheet s TTOHNEYS 4 5, m w. 4, s 11 e 5 K s 5 4 W L U 7 u L d 5 L M N E E w w f s w mm C R E v. o M L M w .l U..

/n/L/ENTOH (no wel, L)

4 UUR/VE YS Pais-:med @et 30, N23

el o ,iglmownf` v,tha LEE ,CRQWVELL', citizen ofzthe United tafteSf, and a resident if Tulsa,1 in'he A@Qui/11551:pf rmsaandjSt-fe of Oklahoma; hare inyented Certainnew and usefuly mproyements in` Gilmer .y Gafs *W'lls', ofwhich the v=follofwingf is" 'a' speeieaton. The' @present invention, Lijelateelin general l mais Weins. @dimore rarfiqurliyie aftubmgvol saverjfor" use,` 1n` conjunction n# Off: @owing-Qn "gas,y welle usually consietsm'inthewmain; of an casing', .@"caslnghead fliav'ing. a and fa tubing andpaeker. y Y. *l f 'i' The fundamental `purpose Offroil zoals;- l is thatyofjp'rotecjtich, that is' t say to 'keep the waerande'aiiing frorinazions' from Sirable and even necesSaryftonsert-apipe of smaller'idi'arneter "tlanlthe 'easing 'and 'therefore the' tubingequi'pped with the packer isfintrodueed into the well forthe purpose of building 'up lie'lpres'sure' 'by restricting :5o vthe outletfv .The tubin'gaud packer proleng esalje jof vth ld`isiiifagntlling'T4 Yof "th 1l 'saverA and without fperrnlttilngthe `escape of oil r gas whereby thedngerolief'isninixn ed and the haz- 'Jard` to the operatorsy iifredueed.

Another 'objejtoff theinvention is to pro` Videla-'tubingoilSaverfwhichimay be readily a'`sSe'rloledj on 01W-removed vfrom the casing head of a flowing oilorsgasfawell Without disturbing ,the'iflow :of oil or? gas through casinghead ofgfao'wingfoilor-,gas Well and bepasvsed hrough the casing vagainst the escape n inggrtheow of oil lirough the casing *n andexelusive advantage-of thefinvention lathattffnot only profidea al-.iyieldahlefineanslvof y'sealing the an- `nularspaefallround?"theitubing; but that it 'radialareaof theV ca smg monthf-hus per- `KnittingIto` pass a, toolofljarger diameter than "the liubingithroughthenasing head and @then @sealing wie anni..

` 'epace around they tu ro tubing oil A"'lialole and ready 'nexpensive to vel features of flfa rran gement pointed out i1 awings forming .-in which:

gif-lenta views en f'embodired 1n a breken l waage h'fis of .simple fter more reference being Figure 4 is a plan view thereof Figure 5 isa detail view in elevation of one of the sections of the bowl of the tubing oil saver;

Figure 6 is a detail view in plan of one of the sections of the top thereof;

Figure 7 is a similar view in elevation;

Figures 8, 9 and 10 are detail views of one of the sections of the false bottom;

Figures 11 and 12 are detail views in elevation and in plan respectively, of one of the tubing rings;

Figures 13 and 14 are the other tubing ring; and

Figure 15 is a detail view in elevation of one of the cages of the packing rubber;

Figure 16 is a simil-ar view in side elevation of the cage; and

Figure 17 is a plan view thereof.

Referring to the drawings wherein for the sake of illustration is shown the preerred embodiment of the invention, the numeral 10 designates the well casing, upon which the casing head 11 is mounted. The

similar views of casing head includes l-ateral outlets 12 and an annular seat 13 at its upper end which ordinarily receives the casing head top but which in the present instance receives the tubing oil saver, designated generally at 15. Tubing 16 extends down into the well casing through the casing head and the tubing oil saver and includes a packer 17 of any standard type. Below the packer' 17 the tubing 16 preferably has incorporated therein a Neaths tubing disk, designated at 18, and which comprises a disk of thin cast iron sheet which seals the tubing until it is broken by dropping a weight through the tubing when the packer is set and when all is ready to direct the oil or gas through the tubing.

The tubing oil saver 15 comprises a bowl 20 consisting of two similar and symmetrical sections 21 (see Figure 5). Each section 21 has a meeting face 23, milled, ground or otherwise machined or formed to. a smooth tit so that when the sections are united to form the bowl and secured together the bowl will be gas-tight. Each section includes assembly lugs 24 which are alined in the assembly and coact with bolts and nuts 25 to retain the sections of the bowl in assembly. The bowl in assembly includes a shell or body portion 26, a base portion 27 and a depending extension 28, the extension 28 being braced and strengthened by webs 29 integral with the base and the entension.

The extension 28 is provided with a bevel or inclined shoulder 28 at its lower end which is to be received on the shoulder 13 of the casing head and secured thereto by means of coacting set screws 33. In order to provide means for attaching the device 'to other sizes .of casing heads a falsebottom y30 is provided and has threaded connection,

as at 31, with the extension 28 and is provided at its lower end with an inclined or beveled annular shouldery 32 which is received on the seat 13 of the casing head and which coacts with set screws 33 carried by the casing head to maintain the tubing oil saver in position on the casing head. The false bottom 30 also consists of two similar and symmetrical sections, one of such sections being shown in detail in Figures 8, 9 and 10. It may be detached without detracting from the completeness of the device and is to be used according to the size of casing head on which the ldevice is to be installed.

A top, designated generally at 35 is provided for the bowl and includes similar and symmetrical sections 36 (see Figures 6 and 7) adapted to be releasably connected with each other by means of -assernblyelugs y37 and bolts and nuts 38. In assembly, the -top includes a body portion 39 and a depending marginal flange 40 which extends down around the shell or body portionof the bowl. The shell or body portion 26 of the bowl is provided with slideways 45 which slidably receive guide lugs 46 carried by the top. Each section 21 of the bowl is provided with a pair of these slideways and each section 36 of the top is provided with a pair of coacting lugs whereby these ele ments do not in any way detract from the demountable character of the oil saver although insuring a complete organization of the top and bowl in the assembly.

A packing rubber, designated generally at 50, is provided and is arranged in the bowl 20: The packing rubber consists of two sectlons, designated at 51, each section consisting of a series or plurality of semiannular rubber disks 52, each series of rubber disks being carried by the sections 53 of a cage. Each cage section 53 carries two vertically spaced stationary rings 54 constituting spacing rings for the semi-annular rubber disks 52, the rings 54 being secured to these cage sections by screws 55. A loose semi-annular ring 56 is arranged on the top rubber disk and the rings 54 and 56 are secured together by means of vertically ex-l tending bolts and nuts 57 the bolts of which extend through suitable openings provided therefor in the spacing rings and in the rubber disks. The packing rubber sections are movable or adjustable into packing en- Each disk is moulded thinner at the center.

than at the outer` edge,thus when the cage sections 53 are adjusted into packing enga ement with the tubing, the rubber dlsks wil more readily adjust themselves as theY tubing and tubing collars are lowered through the rubber disks.

Attention is also called to the feature of being able to inter-change the rubbers, or install rubbers with various size holes in the center, all according to the size of tubing to be run through them.

Operating mechanism is provided for adjusting or moving the sections of the packing rubber to and away from the tubing so as to permit the introduction of the tubing packer and for this purpose the bowl sections 21 are provided with threaded bearings 58 in which operating screws 59 are journaled, the operating screws 59 having swivelled connections 60 with the cage Sections at their inner ends and operating handles 6l on their exterior ends.

Superposed tubing rings 62 and 63 are carried by the top and extend around the central opening thereof. These rings also consist of similar and symmetrical sections shown in detail in Figures 11 to 14.

The tubing rings 62 and 63, 4shown in detail in Figures 11 to 14 provide a base or rest for the tubing elevators while lowering a string of tubin into the well, they are made in symmetrical sections so that they may be dismantled the same way as the other major parts of the device. They are made of two sizes, thus providing an elevator rest for the prevailing sizes of tubing.

As shown, they are telescoped into each other, and in turn, telescoped into the top 39, thus held in a central position.

ln practice, the packing rubbers are adjusted or moved into operative packing engagement with the tubing by turning the operating screws 59 so as to cause the cages and the packing rubber sections to move across the floor of the base 20 of the bowl and into engagement with the tubing. When it is desired to introduce the tubing packer, the handles 6l of the operating screws are grasped and the operating screws are turned to retract the packing rubber' sections and move them away from the tubing thus affording ample space for the introduction of the packer. After the' packer has passed through the casing head the packing rub-bers may be again moved quickly into engagement with the tubing and in this manner waste of oil and gas and increase of danger and hazard are prevented. Then the tubing and packer have been Set into position in the well the tubing oil saver may be readily removed by taking out the bolts from the assemblyv lugs and demounting the sectional bowl, cage and packer rubbers.

I claim: i

l. In a device of the character described,

a bowl comprising sections, means for releasably securing the sections of the bowl together in assembly, a top for said bowl comprising sections, means for releasably securing the sections of the top together in assembly, slideways carried by the sections of the bowl, lugs carried 'by the sections of the top and operativel engaged in said slideways, a packing ru ber in said bowl including an adjustable section operating in each of the sections of said bowl, a cage for the packing rubber having a section for each of the sections of said packing rubber, and operating mechanism for the packing rubber sections including an operatlng screw journaled in each bowl section, a swiveled connection between each operating screw and the adjacent cage section of its bowl section, and a handle for each operating screw.

2. In a device of the character described, a bowl comprising sections, means for releasably securing the sections of the bowl together in assembly, a top for said bowl comprising sections, means for releasably securing the sections of the top together in assembly, a packing rubber in said bowl including an adjustable section operating in each of the sections of said bowl, a cage for the packing rubber having a sect-ion for each of the sections of said packing rubber, and operating mechanism for the packing rubber sections including an operating screw journaled in each bowl sect-ion. and a swiveled connection between each operating screw and the adjacent'cage section of its bowl section.

3. In a device of the character described, a bowl comprising sections, means for releasably securing the sections ot' the bowl together in assembly, a top for said bowl comprising sections, means for releasably securing the sections of the top together in assembly, slideways carried by the sections of the bowl, lugs carried by the sections of the top and operatively engaged in said slideways, a packing rubber in said bowl including an adjustable section operating in each of the sections of said bowl, and a cage Jfor the packing rubber having a section for each of the sections of said packing rubber.

4. In a device of the character described` a bowl, a packing rubber in said bowl and including adjustable sections, each of said sections comprising a series ot' scmi-annular packing disks, a cage for said packing rubber including a section for each section of the packing rubber` each cage section having rigidlyV secured thereto semi-annular spacing rings for the semi-annular disks ot the packing rubber sections, a loose semicircular spacing ring superposed on the uppermost semi-annular packing disk and bolts and nuts connecting said disks and rings, and operating mechanism for said adjustable packing rubber sections including operating screws, swiveled connections between the operating screws and the cage sections, and handles for the operating screws.

5. In a device of the character described, a bowl, a packin rubber in said bowl and including adjusta le sections,.each of said sections comprising a series of semi-annular packing disks, a cage for said packing rubber including a section for each section of the acking rubber, each cage section having rigidly secured thereto semi-annular spacing rings for the semi-annular disks ofthe packing rubber sections, a loose semi-annular spacing ring superposed on the uppermost semi-annular packing disk and bolts and nuts connecting said disks and rin and operating mechanism for said adjustable packing rubber sections including operating screws, and swiveled connections between the operating screws and the cage sections.

6. In a device of the character described, a bowl includin sections, means for releasabl securing t e sections of the bowl toget er in assembly, a packing rubber including an adjustable section operatively arranged in each bowl section, each adjustable section including a series of semi-annular 4 disks, a cage for said packing rubber including a section for each section of the packing rubber, each cage having semi-annular spacing rings for the semi-annular disks of its packing rubber section, and means for securing the rings and disks in position in the cage section, an operating mechanlsm for each packing rubber section including an operating screw journaled in each bowl 'sec tion and a swiveled connection between eacb operating screw and the cage section of its bowl section.

7. rIn a device ofthe character described, a bowl, a packingy rubber arranged in said bowl and comprising adjustable sections,

-each of said sections including a vertical series of disk sections, a packing rubber cage including a section for each section of the packing rubber, and operating mechanismv for each of said packing rubber sections and associated with said cage sections.

8. A tubing oil saver for use with flowing oil or gas wells having a casing, a casing head and tubing, and arranged on said casing head and including a bowl, a false bottom carried by said bowl, means coacting with the false bottom for securing thebowl ron the casing head, a packing'rubber arranged in said bowl and comprising sections movable into packing engagement with said tubing and out of packing engagement with and away from said tubing, and operating mechanism for said rubber sections. 9.A In a device of the characterdescribed,

a casing head having a seat thereon, a bowlhaving an extension provided with a beveled or inclined shoulder onv its lower end, said extension being internally threaded, a false bottom having threads cooperable with 'the internal threads of said extension and having a beveled or inclined shoulder on its lower end and set screws carried by the casing head and selectively engageable with the beveled shoulder of the extension or with the beveled shoulder of the false bottom.

11. In a device of the character described, a bowl comprising sections, means for releasably securing the sections of the bowl t0- gether in assembly, a top for said bowl comprising sections slidably fitted to the sections of said bowl, means for releasably securing the sections of the top together in assembly, and a packing rubber in said bowl including an adjustable section operating in each of the sections of said bowl.

12. In a device of the character described, a bowl, a packing rubber in said bowl and including adjustable sections, each of said sections comprising a series of semi-annular packing disks, a cage for said packing rubber including a section for each section of the packing rubber, each cage section having rigidly secured thereto semi-annular spacing rings for the semi-annular disks of the packing rubber sections, and a loose semi-circular spacing ring superposed on the uppermost semi-annular packing disk and bolts and nuts connecting said disks and rings.

13. A tubing oil saver for use with ow ing oil or gas wells having a casing, a casing head and tubing arranged on said casing head and including an elongated bowl and a lliacking rubber including sections engageab e with the tubing for sealing the annular s aced around said tubing, said sections being movable to the ends of said elongated bowl to open up the full radial area of the casing so as to permit a packer or the like to pass through said bowl.

14. A tubing oil saver for use with {iowing oil or gas wells having a casing, a casing head and tubing comprising sections coupled to each other and including a bowl sitating adjustment of the same.

ERD V. CROWELL. 

